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geniusboy [140]

3 years ago

5

there was a bad outbreak of the flu at ms .forty percent of 250 students in the seventh grade came down with the flu. how many o

f the seventh graders got the flu.

2 answers:

Dmitry_Shevchenko [17]3 years ago

5 0

There were 100 kids who came down with the flu.

exis [7]3 years ago

3 0

40 percent of 250 = .4*250 = 100
100 seventh graders got the flu.

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Step-by-step explanation:

Given: The population at Bishop High School students in 2011 =2000

Also, Every year the population decreases by 50 students which implies the rate of decrease in population is constant.

So, the function is a linear function.

Let p be the population at t be the number of years since 2011.

Then, $p=2000-50t$

So at t=0, p=2000

In year 2015, t=4, substitute t=4 in the above equation ,we get

$p=2000-50(4)\\\Rightarrow\ p=2000-200\\\Rightarrow\ p=1800$

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$1600=2000-50t\\\Rightarrow50t=2000-1600\\\Rightarrow50t=400\\\Rightarrow\ t=\frac{400}{50}\\\Rightarrow\ t=8$

Now, 2011+8=2019

Hence, in <u>2019</u> the population be 1600 students

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